baber/WOPTO huggingface dataset:
Patent GB-975837-A (GB)
Title: Improvements in or relating to variable pitch propeller pumps
Inventor: FICHELSCHER KURT
IPC: F04D15/00
Filed: 1962-02-15
Abstract: 975,837. Axial-flow pumps. MASCHINENBAU-A.G. BALCKE. Feb. 15, 1962, No. 5882/62. Heading F1C. In a variable-pitch axial-flow pump having a withdrawable runner unit, an adjusting tube coaxial with the pump shaft is provided, upper and lower parts of the adjusting tube being connected by an intermediate part, and the adjusting tube being connected at its upper end by an adjusting bearing to an adjusting or bearing housing which is internally screwthreaded to engage an external screw thread on the adjusting bearing. The pump shown in Fig. 2 comprises a runner unit having variablepitch runner blades 9, exit stator 5 and diffuser 6, suspended within a tubular housing 1 by means of a suspension tube 8. The pump discharges through a lateral discharge bend 3. The suspension tube 8 depends from the underside of a cover plate 7, Fig. 3, which closes the top of the housing. Blade pitch adjustment is effected by a motor or a handwheel, which acts through worm gearing 30 to turn a bearing housing 23 having a screw-threaded engagement with the outer race of a bearing 22, whereby the bearing moves axially together with an adjustment tube which surrounds the pump shaft 11 and has its upper part 20 journalled in the bearing. The lower end 18 of the adjustment tube is connected by means of a spider 16 and links 17 to the blades 9. The bearing 22 is prevented from rotating by guide bars 24 which carry a rod 29 for operating a limit switch. Rod 29 carries a blade position indicator 28. To facilitate dismantling, the intermediate part 21 of the adjustment tube may be subdivided into two parts 34, Fig. 5, separated by a longitudinally split part 33, the pump shaft 11 being subdivided at 36 into two parts joined by a coupling sleeve 31, and the suspension tube 8 being interrupted by a longitudinally split intermediate part 32.
Patent GB-348727-A (GB)
Title: Improved means of control for wireless receivers
IPC: H03J5/24
Filed: 1930-02-24
Abstract: 348,727. Wireless receiving systems. STEVENS, W. A., Castlemaine, London Road, Maidstone, Kent. Feb. 24, 1930, No. 5998. [Class 40 (v).] A wireless receiver is tuned to predetermined wavelengths by means of a linked switch a, b such that in one position the wavelength is determined by circuit e, d in another position condenser c is connected in parallel with e, d for a longer wavelength, while in its mid-position the switch interrupts the filament supply. An additional selection may be obtained by a further switch l co-operating with condensers g, f. Condensers c, d may be switched at b by an arrangement similar to the switch l. Where a highfrequency and detector valve combination is concerned, switches a and b may be linked with a further switch effecting corresponding circuit changes in the tuned anode coupling, Fig. 3 (not shown). The Provisional Specification refers to the application of the invention to a crystal set.
Patent GB-130565-A (GB)
Title: Improvements in Railway Crossings and Points.
Inventor: FISHER GARTHORNE JOHN
IPC: E01B7/04
Filed: 1919-03-11
Abstract: 130,565. Fisher, G. J. March 11, 1919. Crossings without movable parts; point tongues, mounting of.-Switches and crossings are constructed to be used either for right or left hand turnouts. The crossing has duplicate throats c<1>, c<2>. The switches c<1>, e<2> have fixed back rails j<1>, j<2> and stub rails h<1>, h<2>, i<1>, i<2> the point tongues being invertible. For a right-hand turnout, the stub rails h<2>, i<2> and pivots f<2>, g<2> are used.
Patent GB-875052-A (GB)
Title: Improvements relating to acrylonitrile polymer fibres
IPC: D06C29/00
Filed: 1960-02-19
Abstract: Acrylonitrile polymer fibres having a negative birefringence and a shrinkability of at least 35% are produced by drying undrawn, solvent-free fibres of the polymer at 100 DEG -130 DEG C. to reduce their moisture content to below 10%, treating the dried fibres with an aqueous medium at 96 DEG -110 DEG C. for at least 15 seconds, and then drawing the fibres to 1,5-2,5 times their original length.  The polymer may be polyacrylonitrile or a copolymer containing at least 70% of acrylonitrile and not more than 30% of one or more neutral mono-ethylenically unsaturated monomers copolymerizable with acrylonitrile, such as vinyl acetate, methyl vinyl ketone, methyl acrylate, methyl methacrylate, vinyl chloride, or vinylidene chloride.  All or part of the neutral monomer may be replaced by up to about 10% of a cationic or anionic monomer, such as sodium styrene sulphonate or 2-vinylpyridine, to give improved dye receptivity.  The aqueous medium is water, steam, or an aqueous solution or dispersion of a conventional textile-treating agent.  The fibres may be dried between the treatment with an aqueous medium and the subsequent stretching operation.  When stretching in an aqueous medium a temperature of about 70 DEG -80 DEG C. is preferred.  When stretching in hot air, as between heated closely spaced plates, plate temperatures of 118 DEG -138 DEG C. may be used.  "Solvent-free fibres" are defined as fibres containing not more than 3% of the spinning solvent and "undrawn fibres" are defined as fibres which have been given no substantial degree of permanent stretch.  The fibres may be either dry- or wet-spun and are free from voids. Shrinkage of the final fibres may be effected by treating them with boiling water or dry heat, e.g. at 143 DEG C.  In an example, a tow of fibres formed by dry-spinning a solution in dimethyl formamide of a terpolymer of 94% acrylonitrile, 5,7% methyl acrylate, and 0,3% sodium styrene sulphonate has its solvent content reduced to 1,4% (based on the dry fibre) by passage through a series of aqueous solutions of solvent of diminishing concentration, is dried at 127 DEG C. in air for 8 minutes to below 1% water content, is then boiled in water for 30 minutes and is finally given a 90% stretch while being passed between and in contact with two parallel flat plates heated to a surface temperature of 118 DEG C.  The fibres may be used, blended with low shrinkage fibres, for the production of yarns for conversion into pile fabrics.  Specification 586,881 is referred to.
Patent GB-544299-A (GB)
Title: Method of and apparatus for mixing concrete
IPC: B28C5/42
Filed: 1941-05-09
Abstract: 544,299. Concrete mixers. TRIGGS, W. W. (Chain Belt Co.) May 9, 1941, No. 6047. [Class 86] A machine for mixing and transporting concrete comprises a conical, bladed drum mounted on an inclined axis and rotated in the same direction both for mixing and discharge, the upper open end of the drum being fitted with a hopper which prevents escape of the materials during mixing and is moved away from the drum mouth to allow discharge; the hopper may serve to charge the drum. The drum 11, Fig. 1, fitted with helical blades 16, rotates about an axis inclined at 10-20 degrees on a frame carried by a chassis. The hopper 17 is fitted with a sleeve 19 bearing on a shaft 18 carried by the drum and is connected by a bearing 48 fitted with a seal 52 with a conical member 47 bearing against the end of the drum. The hopper is moved to allow the drum to be discharged by arms 23, Fig. 2, connected to trunnions 21 thereon by telescopic links 22, the arms being operated from a hand wheel 31 by worm gear 28, 30 and a crank 27 engaging arms 25 mounted on the same shaft 24 as the arms 23 ; the hopper is provided with an internal lip 57. The mixed concrete falls down a shoot 61. Water is supplied by a pipe 63 and the direction of rotation is such that the blades 16 feed upwards. U.S.A. Specifications 1,998,749 and 2,045,532 are referred to.
Patent GB-968466-A (GB)
Title: Improvements in and relating to methods of copying documents
IPC: G03C5/60
Filed: 1962-02-16
Abstract: 968,466. Heat-sensitive photographic materials. INTERNATIONAL BUSINESS MACHINES CORPORATION, and KALVAR CORPORATION. Feb. 16, 1962 [March 6, 1961], No. 6051/62. Heading G2C. A method of copying an original which comprises placing the document in contact with a vesicular copy sheet, heating by infra-red radiation so that the areas of the sheet in contact with the image areas of the original become more heated and less sensitive to ultra-violet radiation, subjecting the heated sheet to ultra-violet radiation and heating to develop the latest image therein. The copy sheet may be mounted on a support which is preferably transparent to infra-red and ultra-violet radiations. Specification 861, 250 is referred to.
Patent GB-747390-A (GB)
Title: Method of joining endless-conveyor belts, intended for reaping machines, or the like
IPC: F16G3/00
Filed: 1954-03-03
Abstract: 747,390. Belt fastenings. PETTERSSON, P. O. March 3, 1954, No. 6213/54. Class 80(1) In order to connect the ends of a conveyer belt in a reaping machine, one end of the belt has a hem 2 retaining a bar 3, while the other end has secured thereto a number of straps 5 each provided with holes 8 so that screws 9 may be inserted in a selected hole 8 in each strap and pass through holes provided in the hem 2 and bar 3, and according to the invention the screws 9 also pass through holes so positioned in the free-end of the belt that an outward bulge 11 is formed to avoid any tractive stresses therein, as the thickened belt connection passes round the reversing rollers of the conveyer. The straps 5 are secured by rivets passing through the belt driver ribs. In modifications the screws 9 are replaced by connection hooks Fig. 4 or Fig. 6, which are inserted through the aligned holes in the straps and bar, each hook comprising a base plate and a belt arm.
Patent GB-771352-A (GB)
Title: Improvements in or relating to tools for lifting the ashpans of solid fuel burning appliances
Inventor: PRESTON THOMAS BAXTER
IPC: F24B15/00
Filed: 1954-07-16
Abstract: 771,352. Holding and picking-up tools. MITCHELL RUSSELL & CO., Ltd. July 16, 1954 [March 6, 1953], No. 6217/53. Class 61 A tool of the outward grip pliers type, for lifting and holding ashpans while being emptied, comprises a pair of pivoted limbs 10, 11 of channel formation pivoted together at 12 and having at the front ends thereof projections 14 for engagement with corresponding brackets 19 or slots on the ashpan, the front ends of the arms being urged together by a spring 13. The rear end of one limb is provided with an elongated slot 15 for tightening screws and the rear end of the other limb with a cut away part 17 for lifting the lid of a stove. The tool may be provided with holes to engage a pin on the shaker rod of a solid fuel stove. In a modification the projections are formed on the ashpan and the brackets or slots in the tool.
Patent GB-1214581-A (GB)
Title: Polyhydroxyalkylamines, their corresponding quaternary compounds, and a process for their production
IPC: D06M13/368
Filed: 1968-02-08
Abstract: 1,214,581. Polyhydroxyalkylamines. HENKEL & CIE G.m.b.H. 8 Feb., 1968 [9 Feb., 1967], No. 6237/68. Heading C2C. [Also in Division D1] Novel N - alkyl - N - (2 - hydroxyalkyl) - polyhydroxyalkylamines of general formula where R 1  is C 8-18  alkyl which may be interrupted by an O atom; R 2  is C 6-18  alkyl; the sum of the C atoms in R 1  and R 2  being 24-36; Z is a polyhydroxyalkyl residue with 3-6 C atoms, the number of OH groups in this residue being at least half the number of C atoms; or the corresponding quaternary compounds wherein the fourth organic residue linked to N is one containing not more than 8 C atoms, are prepared by reacting a compound of general formula Z-NR 1 H with a terminal alkylene oxide having 8-20 C atoms, and, if desired, converting the product to a quaternary compound. The reaction is preferably performd with equimolar amounts of the amine and the alkylene oxide at 120-170 C. in the absence of oxygen and optionally in the presence of an inert solvent. In the examples N-alkyl-glucamine was heated with an equimolar amount of the alkylene oxide, Z being the polyhydroxyalkyl residue from glucose, R 1  being octyl, dodecyl, hexadecyl, octadecyl or a C 12-18  alkyl mixture and R 2  is a C 13-16  alkyl mixture.
Patent GB-657585-A (GB)
Title: Improvements in or relating to the production of gases containing carbon monoxide and hydrogen from hydrocarbons
IPC: C01B3/40
Filed: 1949-03-08
Abstract: In the production of carbon monoxide and hydrogen mixtures by the oxidation of gaseous hydrocarbons such as methane with a metal oxide using the fluidized solid technique, copper oxide, supported on a finely-divided carrier of magnesia, alumina, zirconia, thoria or preferably silica, is used to supply oxygen in stoichiometric or slightly greater proportions relative to the feed, and the resulting supported metallic copper acts as a reforming catalyst for the reaction of carbon dioxide and water formed by the oxidation, with unreacted methane to form carbon monoxide and hydrogen.  Temperatures from 1500-1850 DEG  F. are employed at atmospheric pressure or up to 2400 DEG  F. at 400 p.s.i.  The catalyst, containing 3-30 per cent copper, may be prepared by adding silica gel to copper nitrate solution, drying, heating to decompose the nitrate, grinding and reducing with methane at 1600 DEG  F.  Control of the reaction is effected by providing a small <PICT:0657585/III/1> additional pilot reforming zone to which samples of the exit gases may be passed, a highly-active reforming catalyst and higher temperatures such as 2000-2400 DEG  F. being provided to ensure completion of reformation. The oxygen feed to the main process is adjusted to provide under normal conditions, from 1/2 to 3 per cent carbon dioxide content in the pilot outflow. Determinations of carbon dioxide content by known methods are then made (a) in the main process exit gases and (b) in the pilot exit gases.  If (a) is excessive, either the reformation is incomplete or the oxygen feed is excessive.  If (b) is also excessive too much oxide is being fed to the main process, whereas if (b) is normal and (a) excessive, the reforming reaction in the main process is incomplete and reduction of gas velocity or increase in temperature is necessary.  In the Figure, the reactor 101 is supplied with hydrocarbon via line 109 and supported copper oxide from regenerator 102 via line 107.  The product gas is separated from entrained fines in separator 117, the fines returning to overflow pipe 106 which carries the catalyst from the reactor to the base of the regenerator where oxidizing gas via pipe 111 oxidizes the copper to copper oxide for return to the reactor via pipe 107.  The product gas effluent through pipe 119 is sampled via line 120 for carbon dioxide content in device 122 and a further sample withdrawn via line 123 to pass through the pilot reforming zone 124 and carbon dioxide analyzer 126. Specification 635,909 is referred to.
Patent GB-738319-A (GB)
Title: Improvements in or relating to negative impedance devices employing transistor amplifiers
IPC: H04B3/18
Filed: 1953-03-06
Abstract: 738,319. Telephone transmission systems. MOULON, J. M. March 6, 1953 [Sept. 19, 1952], No. 6336/53. Class 40 (4). [Also in Group XL (c)] The attenuation of a two-wire line 30 is reduced by the use of a negative impedance in series or in parallel with the line. The transformer-coupled amplifier employing transistors 31, 32 feeds a Wheatstone bridge of resistors 6, 7, 8 and the series impedance of the transmission line 30. By changing over the switches 27, 28 and 29 the negative impedance is altered to suit the parallel connection across the line 30. The circuit is adjusted by disconnecting the feedback circuit from the input, terminating it with an impedance equal to the input impedance of the amplifier, connecting a predetermined resistance in place of the line 30 and adjusting the bridge for balance.
Patent GB-893011-A (GB)
Title: Improvements in and relating to photographic and like reproduction methods and apparatus and materials for carrying such methods into effect
IPC: G03G15/22
Filed: 1958-02-27
Abstract: 893,011. Printing processes. OZALID CO. Ltd., and FERMINGER, A. R. Feb. 24, 1959 [Feb. 27, 1958], No. 6343/58. Class 100(2) [Also in Group XX] In apparatus for electrophotographic copying, the original is placed against an electrostatically charged transparent layer of photo-conductive insulating material, and illuminated from behind the said layer, so that the light passes through the layer first and is then reflected back therethrough from the original so as to form an electrostatic latent image of the original therein, the light then being reflected back again into the layer at least once more; the latent image is then rendered visible by applying powder to the layer, or transferred therefrom on to a transfer surface and fixed on the latter. In the form shown, a glass drum 10 has a transparent aluminium coating 11, on which is a further transparent coating 12 of a photoconductive insulating material such as zinc oxide disposed in a resinous binder; this last may be protected by a hard lacquer coating. The drum 10 can alternatively be of conductive glass or synthetic resin having a partially reflecting surface. The original to be copied is passed against a portion of the photo-conductive surface by a roller feed 15, and illuminated by a light source 13 within the drum, the light being constrained to fall only on the sector required by a shield 14. The surface of the drum is charged by a corona discharge device 19, and after the latent electrostatic image is formed, it is passed through a developing unit 20. The developed image is transferred on to a band of receiving paper 24 by means of a second corona discharge device 28, and fixed by a fusing unit 29. Residual powder on surface 12 is removed by a cleaning device 30. Fig. 2 (not shown) is a simpler non-rotating form of the apparatus.
Patent GB-594320-A (GB)
Title: Steering spindle mounting for motor vehicles
IPC: B62D7/18
Filed: 1945-03-14
Abstract: 594,320. Steering; dust-excluding casings. TRIGGS, W: W. (Timken-Detroit Axle Co.). March 14, 1945, No. 6427. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept 7, 1945]. [Classes 79 (iii), 79 (iv) and 79 (v)] A steering-swivel for driving-wheels comprises a pair of cylindrical trunnion-pins 33, 38 journalled in plain bearings 39 mounted in. an axle-housing 23, the trunnion-pins being frictionally locked in bores in a flanged member 24 secured to the inner end of a stub axle 13. Power is transmitted to the wheel assembly 10 through a front axle 11, universal point 12 and stub axle 13, the latter passing through a tubular spindle 14 on which is rotatably supported on roller bearings 16, 17 a hub 15. A capmember 18 is splined to the shaft 14 and is bolted to the hub 15 by studs 19. The wheel assembly 10 and brake drum 20 are secured to the hub by a number of bolts 22. The end of the axle housing 23 'is mounded and encloses the universal joint 12, The inner end of the flanged member 24 is likewise enlarged to receive the housing 23. The housing 24 is provided with bores 25, 26 to receive a pair of removable trunnion-pin supports 27, 34 which are bored to receive the shrunk-in trunnion pins 33, 38. The weight of the vehicle is taken on a thrust-race 45 located in a recess in the lower trunnion-pin support 34. Alternatively, the load may be taken by a number of hardened steel washers between the parts 23, 34. A flexible sealing boot 51 is attached to the housings 23, 24 and serves to keep out all foreign matter. A metal guard 52 may be attached to the flange 24 to protect the boot.
Patent GB-1208332-A (GB)
Title: Method of treating nodular cast iron
Inventor: ANDERSSON GEORG
IPC: B22D45/00
Filed: 1968-02-09
Abstract: 1,208,332. Spheroidal graphite iron. ALLMANNA SVENSKA ELEKTRISKA A.B. Feb. 9, 1968 [Feb.10, 1967], No.6431/68. Heading C7D. S.G. iron is poured into a closed induction furnace in which the inlet and outlet channels are closed by the bath, air being partially or completely evacuated from the furnace and replaced by a protective gas, e.g. nitrogen or argon, so that the iron may be stored and/or heated without loss of magnesium. The iron may be treated with magnesium while being poured into the furnace or while held therein, while alloying elements or slag formers such as calcium carbide may also be added. The pressure above the melt is preferably maintained at 0À05 to 0À3 atmospheres.
Patent GB-118251-A (GB)
Title: Improvements in Steel Helmets.
Inventor: SOREN LOUIS
IPC: F41H1/06
Filed: 1918-04-16
Abstract: 118,251. Soren, L. April 16, 1918. Helmets.-A steel helmet 1, Fig. 3, of any ordinary pattern, is provided with an external detachable cushioning device 2, Fig. 2, consisting of a central circular portion 2x from which depend curved overlapping spring tongue members 3 whose lower ends are connected together by a band 4. The helmet and its cushioning cover axe secured together by lugs 6, 7 on the former engaging an arched strap 5 on the latter, as shown in Fig. 4.
Patent GB-512473-A (GB)
Title: Apparatus for cutting button holes and similar cutting or piercing opperations
IPC: A41H25/02
Filed: 1938-03-01
Abstract: 512,473. Tools for setting out work. MORGAN, F. W. March 1, 1938, Nos. 6474 and 26130, [Class 61 (ii)] [Also in Groups VIII, VII and XVI] Apparatus for cutting or marking buttonholes &c. comprises a plurality of cutters or markers mounted for relative adjustment to vary the spacing between them and interconnected by means which maintains a pre-determined spaced relationship in all adjusted positions, and means for actuating all the cutters or markers by a single operation. As shown, the cutters 8 are mounted on levers 6 pivoted and slidable on a rod 4 and coupled together by a lazy-tong arrangement 12 actuated by a hand-wheel 19, sprocket wheels 17, 18 and chain 16. The levers 6 are rocked by a cam 23 operable by -a foot-pedal attached to a cord passing round a pulley 24. The cam 23 cooperates with bolts 22 on the levers, one or more of which bolts are mounted in sleeves with quick-pitch screws so that they may be readily moved away from the cam to an inoperative position. The cutters consist of a punch 9 and a straight knife edge 8 and co-operate with a bed 10. They may be replaced or covered by a similarly shaped blunt tool 41 which causes the work to be marked by impregnated felt 44 placed on the bed 10. The work may be posi- 'tioned by an edge gauge 11 which may be adjustable relatively to the bed by a two-handed screw engaging the gauge and the bed; by this adjustment, part of the knife edge 8 may be moved off the bed 10 so as to produce buttonholes of different sizes. The levers 6 may carry arms to assist in positioning the cutters or markers relatively to the work. The lazy-tong arrangement may be replaced by a number of screws of different pitch, gear wheels of different diameters meshing with racks, or cables passing over drums of different sizes.